Q: i was just wondering if my laptop from australia will charge properly in the usa? do i just need a converter so the plug will fit in american sockets or do i need something else? does it matter about the wattage difference? will it still charge properly?
A: It should work fine with just a plug converter (or new power cable, or even just taking a pair of pliers to the plug (actually don't do that one)) as pretty much all laptop adapters are designed to be able to work anywhere on the planet (so they are designed to be able to handle both voltages and both frequencies used for domestic mains power). Just check the label stuck on the adapter to make sure it does say that 110 V @ 60 Hz will work (I'd be very surprised if it can't handle 110 V and 60 Hz). EDIT: The laptop adapter will only draw as much power as it needs which is far less than what pretty much any outlet can supply and as long as the adapter is a universal adapter it'll charge fine.